Document identifier SE 008-001-1

This document contains the Project Apollo Coordinate System Standards (PACSS). It is the result of the combined efforts of representatives from GSFC, KSC, MSC, MSFC and Bellcorn. The standards are primarily derived from past common practice, provide a high degree of uniformity and are such that strict conformance is technically practical.
The majority of the Standard Coordinate Systems are associated with the Earth or Moon and have such uses as site location, ephemerides, trajectory computation and/or transmittal of trajectory information. The remaining Standard Coordinate Systems are referenced to the vehicles (both operating alone and in stacked configurations) or vehicle operations: primarily navigation, guidance and control, Additionally there are Standard Relationships which must exist among specific Standard Coordinate Systems.